欢迎来到天天文库
浏览记录
ID:36538722
大小:303.14 KB
页数:4页
时间:2019-05-11
《加气混凝土料浆的流变性能及其与发气和稠化速率的关系》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、万方数据2000年第11期(总第241期JNumber1Iin2009(TotaINo.24I)混凝土Concrete理论研究THEORETICALRESEARCHdoi:10.39690.issn.1002—3550.2009.11.009加气混凝土料浆的流变性能及其与发气和稠化速率的关系闫加旺,.韦江雄a一,庄梓豪氯6.余其俊2a·b(1.唐山学院,河北唐山063020;2.华南理工大学a.材料科学与工程学院;b.特种功能材料教育部重点试验室,广东广州510640)擒要:研究了粉煤灰和石灰对加气混凝土料浆流变性能、发气速率和稠化速率的影响.建立了加气混凝土料浆流变性能与发气速
2、率和稠化速率之间的关系。结果表明:加气混凝土料浆为假塑性流体,可近似用宾汉姆流体来描述。随剪切速率的增大.料浆的剪切应力增大.黏度降低。随石灰掺量的增大,料浆的剪切应力和黏度均随之增大.而发气高度呈现先增大后减小的规律;随粉煤灰掺量的增加,料浆的剪切应力和黏度也随之增大,发气高度随之降低。黏度(1,)和稠化速率(膏)关系式为:Y=-0.439-0.384X;黏度和发气速率(x.)的关系式为:Y=0.689-0.J64X。。本试验条件下,当料浆的屈服值2Pa3、在料浆中。关键词:加气混凝土;发气;稠化;屈服值;黏度中图分类号:TU528.2文献标志码:A文章编号:1002—3550(2009)ll一0027—04乳udyOntheologicalpropertyofAACpasteandrelationshipbo矗Neengas-formingvelocRyanddensificationvelochyYANJia·wan91.WEIJiang-xieng’''b,珊MNG乃勘_”.yU哪如置。(1.TangshanCollege,Tangshan063020。China;2a.SchoolofMaterialsScienceandE4、ngineering;b.KeyLaboratoryofSpeciallyFunctionalMaterialsoftheMinistryofEducation,SouthChinaUniversityofTechnology。Gnangzhou510640,China)Ab咖ct:Theeffectofflyashandlime∞therbeologicalproperty.rateofgas-forminganddensificationofautoclavedaeratedconcrete(AAC)pastewasstudied.thenthe佗imionbcfwccnth5、erheologicalpropertyandrateofgas-forminganddensificationof.AACpastewagestab-lished.TheresultshowsthatACCpasteisapseudoplasticfluid.whichcanbeapproximatelycharacterizedbyBinhamfluidmodel.TheshearsffessofAACpasteisincreasedandtheviscosityofAACpastedecreasedwiththeincrementofshearrate.Withtheadd6、itionoflime,theshearstressandviscosityofAACpasteisincreased.theamountofformedgasisincreasedatfirstandthendecreased.Whilewiththeadditionofflyash.theshearstressandviscosityofAACpasteincreased.buttheamountofformedgasisdecreased.Therelationalbctwocnviscosity(Y)andmteofdensifica-tiun(X)ofAACpastec7、allbcexpressedas:velocityandisy=-0.439-0.384X.andtherelationalbet3veeTltheviscosityandrateofgas-forming(JI)is:Y=0.689-0.164X,.Accordingtothisexperiment,iftheyieldvalueofAACpaste(,)iscontrolledbetween2Paand4Pa,andtheviscositybetween0.2Pa。Sand0
3、在料浆中。关键词:加气混凝土;发气;稠化;屈服值;黏度中图分类号:TU528.2文献标志码:A文章编号:1002—3550(2009)ll一0027—04乳udyOntheologicalpropertyofAACpasteandrelationshipbo矗Neengas-formingvelocRyanddensificationvelochyYANJia·wan91.WEIJiang-xieng’''b,珊MNG乃勘_”.yU哪如置。(1.TangshanCollege,Tangshan063020。China;2a.SchoolofMaterialsScienceandE
4、ngineering;b.KeyLaboratoryofSpeciallyFunctionalMaterialsoftheMinistryofEducation,SouthChinaUniversityofTechnology。Gnangzhou510640,China)Ab咖ct:Theeffectofflyashandlime∞therbeologicalproperty.rateofgas-forminganddensificationofautoclavedaeratedconcrete(AAC)pastewasstudied.thenthe佗imionbcfwccnth
5、erheologicalpropertyandrateofgas-forminganddensificationof.AACpastewagestab-lished.TheresultshowsthatACCpasteisapseudoplasticfluid.whichcanbeapproximatelycharacterizedbyBinhamfluidmodel.TheshearsffessofAACpasteisincreasedandtheviscosityofAACpastedecreasedwiththeincrementofshearrate.Withtheadd
6、itionoflime,theshearstressandviscosityofAACpasteisincreased.theamountofformedgasisincreasedatfirstandthendecreased.Whilewiththeadditionofflyash.theshearstressandviscosityofAACpasteincreased.buttheamountofformedgasisdecreased.Therelationalbctwocnviscosity(Y)andmteofdensifica-tiun(X)ofAACpastec
7、allbcexpressedas:velocityandisy=-0.439-0.384X.andtherelationalbet3veeTltheviscosityandrateofgas-forming(JI)is:Y=0.689-0.164X,.Accordingtothisexperiment,iftheyieldvalueofAACpaste(,)iscontrolledbetween2Paand4Pa,andtheviscositybetween0.2Pa。Sand0
此文档下载收益归作者所有